1959 - History of Ericsson - History of Ericsson

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Crossbar Exchange Installed on Large Passenger Steamer On the new 38,645-ton passenger steamer, T/S Rotterdam, of the Dutch America Line, which recently made her maiden voyage from Rotterdam to New York, almost every passenger on board has an ivory-white L M Ericsson telephone for his or her own use. The instruments are connected to what is believed to be the world's first ship-borne automatic crossbar telephone exchange. With a capacity of 650 extensions, the exchange was delivered by L M Ericsson and installed by its subsidiary company in Holland. Communications between officers and crew are passed through a separate 80-line automatic switchboard. L M Ericsson also supplied emergency telephones for the ship's lifts and a master clock system with over 100 slave clocks. T/S Rotterdam, built for 1,456 passengers by Rotterdamsche Droogdok Mij. N. V. in Rotterdam, is driven by two steam turbines each developing 17.500 h.p. (Above) Chief Electrician Yanderwal inspecting a crossbar switch in T S Rotterdam's automatic switchboard (Right) The Telephone and Electrical Industries Ltd. factory, Sydney, one of the two locations at which crossbar is to be manufactured. 132 Crossbar Standard Australian System Large New L M Ericsson Market The Australian Post Office has approved the crossbar system offered by L M Ericsson as the new standard system of automatic telephony in Australia. The system is based on the crossbar switch developed by the Swedish Telecommunications Administration. The APO decision must be regarded as an outstanding success for Swedish enterprise and technology, since the Australian market has hitherto been dominated by British telephone companies. The system will be manufactured on licence in Australia under an agreement concluded between L M Ericsson and two Australian manufacturers, Telephone and Electrical Industries Ltd. and Standard Telephones & Cables Pty. Ltd. Production will start as soon as the necessary arrangements have been completed at the two factories. In the meantime deliveries of crossbar equipment will be made from L M Ericsson factories in Sweden. After several years of thorough study APO has come to the conclusion that this crossbar system best solves the problems associated not only with rapidly expanding city networks, but also with the conversion of rural systems and the introduction of long distance subscriber dialling. APO's evaluation of the suitability of the crossbar system for Australian conditions is reinforced by the long experience of its operation and maintenance gained by the Swedish Telecommunications Administration. The reasons have been partly presented in articles in "The Telecommunication Journal of Australia", which have met with a considerable interest in international telephone circles. The suitability of the system for Australian conditions has been proved also by the results obtained with two small crossbar exchanges of 600 lines each installed by L M Ericsson on trial in Sydney and Melbourne in 1957. This year APO has placed orders for two more crossbar exchanges to be installed at Petersham (2,800 lines) and Toowoomba (6,300 lines). The Australian market - comprising, as it does, a whole continent - is a very important one. The present population numbers 10 million and is rapidly growing. The telephone network is being expanded at the rate of 100,000 lines a year. Expansion of Rangoon Telephone System An order for expansion of the Rangoon telephone network has been received from the Burmese government, comprising automatic exchange equipment for 4,300 lines and the construction of a new 1,000-line exchange to a total value of some 6 million kronor. On the completion of these installations Rangoon will have one of the most modern telephone systems in Asia, with a total of 13,600 Ericsson crossbar lines. The conversion of the Rangoon network to automatic operation was entrusted to Ericsson in 1954, initially for 8,300 lines which are now installed.
(Above) A recent photograph of the Argentine President, Dr. Arthuro Frondizi, speaking on his Ericofon. (Below) Director General B. D. Rampala, M.B.E., Ceylon Government Railway, inspecting L M Ericsson's model railway. With him are Messrs. A. Reuterskiold and Curt Ahlberg of L M Ericsson. The Thailand Foreign Minister, Thanat Khoman, paid a visit to Midsommarkransen in October Here he is being shown some of Ericsson's telephone instruments by Mr. Sven T. Aberg. In the background are Anand Panyar Achun of the Thailand Foreign Ministry and Erik Tennander, First Secretary of the Swedish Foreign Ministry. A Turkish trade delegation looking at a model of Ericsson's main factory at Midsommarkransen. (From left) Messrs. E. Lundqvist, LME, H. Erkmen, Turkish Minister of Commerce, Ambassador O. Malmaeus, K. Aygiin, Mayor of Istanbul, Ambassador O. Eralp, S. Inan, Commercial Attache, and A. Erdas of the Turkish Ministry of Commerce (above). Four picked men from the Royal Harnbsand Coast Artillery Corps visited Midsommarkransen in October in the course of a trip to Stockholm, the reward for good service in different fields. 133
Page 1: 4 1959
Page 4 and 5: Ericovox, the One-Piece Loudspeakin
Page 6 and 7: Fig. 3 X 8156 Block schematic of co
Page 8 and 9: Fig. 5 x 8163 The Ericovox, L M Eri
Page 10 and 11: Fig. 8 X 2443 Sending frequency res
Page 12 and 13: 108 The Ericovox meets the requirem
Page 14 and 15: Fig. 3 Grouping of components in wi
Page 16 and 17: Fig. 9 X 8132 Case with pyramid-sha
Page 18 and 19: Fig. 12 X8134 Instrument with base
Page 20 and 21: Fig. 18 X8135 The locations of the
Page 22 and 23: Gothenburg Automatic Transit Exchan
Page 24 and 25: Fig. 3 x 8181 Block schematic of gr
Page 26 and 27: Fig. 6 122 x 8180 Block schematic o
Page 28 and 29: Fig. 8 X 2472 Link circuits for ori
Page 30 and 31: Fig. 10 X8182 Traffic supervisor's
Page 32 and 33: Fig. 2 X8167 Relay switchboard AMD
Page 34 and 35: 130 Priority The switchboard is des
Page 38 and 39: L M Ericsson to Undertake First C.T
Page 40: The Ericsson Group Associated and c

1959 - History of Ericsson - History of Ericsson

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